/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *	  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jboss.el.lang;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.HashMap;
import java.util.Map;

import javax.el.ValueExpression;
import javax.el.VariableMapper;

@SuppressWarnings({"rawtypes", "unchecked"})
public class VariableMapperImpl extends VariableMapper implements Externalizable {

	private static final long serialVersionUID = 1L;
	
	private Map vars = new HashMap();
	
	public VariableMapperImpl() {
		super();
	}

	public ValueExpression resolveVariable(String variable) {
		return (ValueExpression) this.vars.get(variable);
	}

	public ValueExpression setVariable(String variable,
			ValueExpression expression) {
		return (ValueExpression) this.vars.put(variable, expression);
	}

	public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
		this.vars = (Map) in.readObject();
	}

	public void writeExternal(ObjectOutput out) throws IOException {
		out.writeObject(this.vars);
	}
}
